Missouri · Sports betting
Is sports betting legal in Missouri?
Where sportsbooks stand in Missouri, where Kalshi, Polymarket and other prediction markets stand, and why the answers differ. Built from our sourced state records.
The short answer
Yes. Online sports betting is legal in Missouri. Retail and mobile sports betting; the market launched Dec. 1, 2025 after 2024 voter approval.1
Prediction markets are a separate question: we found no court order or regulator action stopping Kalshi from offering sports contracts in Missouri, as of Oct. 22, 2026.
Sportsbooks in Missouri
Sports betting in Missouri is legal online. Retail and mobile sports betting; the market launched Dec. 1, 2025 after 2024 voter approval.1 Gaming oversight: Missouri Gaming Commission.
Prediction markets in Missouri
Our status for Missouri: In litigation. The state and a prediction market operator are actively in court, and no order blocking the operator is in force. Missouri told six prediction-market operators to stop sports contracts or get licensed; Kalshi, Novig and Crypto.com have sued in federal court.
Latest action (Operator lawsuit, Oct. 27, 2026): Kalshi sued the attorney general and Gaming Commission in the Eastern District of Missouri (No. 4:26-cv-01860) after being told to pull its sports contracts.2
We track 3 lawsuits involving Missouri. Federal appeals from Missouri go to the Eighth Circuit, where an appeal on the question is pending. Full record: prediction market laws in Missouri.
Which prediction market apps work in Missouri
| Platform | In Missouri | Note |
|---|---|---|
| Kalshi | No restriction found | |
| Polymarket US | No restriction found | |
| Coinbase | No restriction found | Contracts trade on Kalshi. |
| Crypto.com | No restriction found | North American Derivatives Exchange, d/b/a OG.com Prediction Markets, sued Missouri officials in the Western District of Missouri on 2026-10-16, after the attorney general's September letters. No relief had been reported. |
| DraftKings Predictions | Sports blocked | |
| Fanatics Markets | Not offered | Contracts trade on Crypto.com | Derivatives North America (Nadex rules). |
| FanDuel Predicts | Sports blocked | Contracts trade on CME Group (financial contracts) and Crypto.com | Derivatives North America / OG (sports, entertainment and combination contracts). |
| Gemini Predictions | No restriction found | |
| PrizePicks | Sports blocked | Contracts trade on Kalshi. |
| Robinhood | No restriction found | Missouri's attorney general sent letters on 2026-09-16/17 to six operators, including Robinhood Derivatives, LLC, demanding they stop sports contracts or comply with state licensing, tax and age rules. Robinhood's response was not confirmed. |
| Underdog | Offered | Contracts trade on Underdog's own exchange UDX (Aristotle Exchange DCM/DCO, Inc. d/b/a Underdog Exchange), plus Kalshi and Nadex (Crypto.com | Derivatives North America). |
| Webull | No restriction found | Contracts trade on Kalshi. |
“No restriction found” means we know of no court order, regulator action or platform notice stopping it in Missouri; it is not a finding that it is legal there.
Why the answers differ
A sportsbook takes the other side of each bet and keeps what bettors lose.3 It needs a license from the state. A prediction market is an exchange that matches users with each other and takes a fee,3 and the large ones are regulated by the CFTC, whose jurisdiction over trading on those exchanges federal law calls exclusive.4 That is the platforms’ case for offering sports contracts nationwide; by the 2025 Super Bowl, Kalshi offered them in all 50 states, including states without legal sports betting.5
States answer that sports event contracts are sports bets by another name; Massachusetts, for one, says Kalshi’s closely resemble wagers at licensed sportsbooks.6 Federal appeals courts have split, 1 for the platforms and 2 for the states, and 3 petitions now ask the Supreme Court to decide: see the circuit split.
Age limits
Kalshi and Polymarket US accept customers from 18,78 while most states set the gambling age at 20 or 21, a gap critics including the NCAA have raised.9 See how old you have to be. If gambling is causing you harm, call or text 1-800-GAMBLER.
Questions
- Is sports betting legal in Missouri?
- Yes. Online sports betting is legal in Missouri. Retail and mobile sports betting; the market launched Dec. 1, 2025 after 2024 voter approval.
- Who regulates sports betting in Missouri?
- Missouri Gaming Commission.
- Is Kalshi legal in Missouri?
- We found no court order or regulator action stopping Kalshi from serving Missouri, as of Oct. 22, 2026. Missouri's status on prediction markets: in litigation. Details are on our Kalshi in Missouri page.
- Is Polymarket legal in Missouri?
- We found no court order or regulator action stopping Polymarket from serving Missouri, as of Oct. 28, 2026. Missouri's status on prediction markets: in litigation. Details are on our Polymarket in Missouri page.
- What is the difference between a sportsbook and a prediction market?
- A sportsbook takes the other side of each bet and keeps what bettors lose, under a state license. A prediction market is a federally regulated exchange that matches users with each other and charges a fee, which is why platforms argue state gambling law does not reach them.
Sources
- Missouri sports betting status
- RG.org
- The New York Times (republished by West Hawaii Today, Oct. 6, 2025)
- 7 U.S.C. 2 (CEA section 2), Office of the Law Revision Counsel
- Axios (Jan. 31, 2025)
- Massachusetts Attorney General's Office (Sept. 12, 2025)
- Kalshi Help Center, Signing Up as an Individual
- Polymarket US terms of service
- Legal Sports Report (Mar. 19, 2026)